Method for encoding/decoding concatenated LDGM code

摘要

A decoding method in a concatenated low-density generator matrix (LDGM) code-based transmission system for detecting a signal using a parity check matrix including a systematic bit part mapped to systematic bits and a parity check part mapped to parity bits. The decoding method includes generating an outer code parity check matrix with a predetermined size using a pseudorandom algorithm; generating an inner code parity check matrix using the outer code parity check matrix; and decoding a received signal using the inner code parity check matrix.